Question

science ch- work and energy....i want the answer for activity 11.13 of the chapter work and energy.... THE ACTIVITY STATES-
Sit in small groups.
• Discuss the various ways of energy
conversion in nature.
• Discuss following questions in your
group:
(a) How do green plants produce food?
(b) Where do they get their energy from?
(c) Why does the air move from place
to place?
(d) How are fuels, such as coal and
petroleum formed?
(e) What kinds of energy conversions
sustain the water cycle?

Answer 1

Answer:

Mark it as brainliest

Explanation:

a)Their roots take up water and minerals from the ground and their leaves absorb a gas called carbon dioxide (CO2) from the air. They convert these ingredients into food by using energy from sunlight. This process is called photosynthesis, which means 'making out of light'. The foods are called glucose and starch.

b)The chloroplasts collect energy from the sun and use carbon dioxide and water in the process called photosynthesis to produce sugars. Animals can make use of the sugars provided by the plants in their own cellular energy factories, the mitochondria.

c)Air moves due to a difference of air pressure which can be caused by different temperatures. Air pressure is the push caused by the particles in the air. ... Air naturally wants to move to lower areas of pressure.

d)Coal and petroleum are formed as a result of degradation of ancient plant life which lived millions of years ago. ... Over time, heat and pressure from geological processes transformed these materials into coal. Since these are formed from essentially fossils, they are also known as fossil fuels.

e)In the water cycle, Potential energy is converted into kinetic and heat energy.